Home / 13,715.87-20,561.49-4,948.74

Finding the Fourth Proportional to 13,715.87, 20,561.49 and 4,948.74

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Solution

The fourth proportional to 13,715.87, 20,561.49 and 4,948.74 is: 7,418.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.87 : 20,561.49 = 4,948.74 : x
  2. Step 2: Convert to fraction form
    13,715.87/20,561.49 = 4,948.74/x
  3. Step 3: Cross multiply
    13,715.87x = 20,561.49 × 4,948.74
  4. Step 4: Simplify right side
    13,715.87x = 101,753,468.02
  5. Step 5: Solve for x
    x = 101,753,468.02/13,715.87
  6. Step 6: Final answer
    x = 7,418.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.